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In 2021, Scott S. Sheppard and colleagues used the Subaru Telescope at Mauna Kea, Hawaii and discovered two more irregular moons of Neptune, which were announced in 2024. [12] These two moons are provisionally designated S/2021 N 1 and S/2002 N 5. The latter turned out to be a recovery of the lost moon from 2002. [2] [13] Discovery of outer ...
An annotated picture of Neptune's many moons as captured by the James Webb Space Telescope. The bright blue diffraction star is Triton, Neptune's largest moon. Neptune has 16 known moons. [155] Triton is the largest Neptunian moon, accounting for more than 99.5% of the mass in orbit around Neptune, [i] and is the only one massive enough to be ...
Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune. [ a ] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50 × 10 9 km).
Triton, the largest moon of the ice giant planet Neptune, is hypothesized to have been captured from heliocentric orbit. Triton is unusual as it is the only known large moon on a retrograde , highly- inclined orbit; that is, Triton orbits in the opposite direction Neptune rotates, and its orbit is not aligned with Neptune's equatorial plane.
Surface features of Neptune's moons (8 P) T. Triton (moon) (1 C, 13 P) Pages in category "Moons of Neptune" The following 16 pages are in this category, out of 16 total.
Along with its bright rings, the Webb observatory spied Neptune's fainter dust bands and seven of the planet's 14 known moons. The last time Neptune's rings were seen in detail was during a flyby ...
Triton is the largest natural satellite of the planet Neptune. It is the only moon of Neptune massive enough to be rounded under its own gravity and hosts a thin, hazy atmosphere. Triton orbits Neptune in a retrograde orbit—revolving in the opposite direction to the parent planet's rotation—the only large moon in the Solar System to do so.
Explore all 63 of Saturn's verified moons, along with their names and discovery dates. Other moons await official confirmation of their discovery.